Humans have understood how to calculate the length of a day pretty accurately for a long time. But there wasn’t a standard way to approach time on a global scale until the late 19th century, and happened because of railroads.
Research:
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- Gordon, Nicholas. “The Senate wants to make daylight saving time permanent—but that could leave Americans with less sleep and worse health.” Fortune. March 16, 2022. https://fortune.com/2022/03/16/daylight-saving-time-sleep-senate-protecting-sunshine-act/
- “Public Law 89-387 – An ACT To promote the observance of a uniform system of time throughout the United States.” April 13, 1966. https://www.govinfo.gov/content/pkg/STATUTE-80/pdf/STATUTE-80-Pg107.pdf
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